Location Diff GPS vs Wifi

Jul 3, 2016

v202
- Add Clear Track button
- Add Ad

v201
- Use Google Maps API v2

v105
- show trajectory history

v104
- Tap GPS & Wifi & Diff area, Map goes to the location.
- Show asking rate and comment dialog (Please give your cooperation).

v103
- change design
- fill circle of position accuracy

v102
- fix not display map